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Chapter 4 SMART2 CAN Bus
4.1 Default Configuration
After a FRESET, the receiver has the following CAN configuration:
The CAN physical port is disabled
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No J1939 addresses are claimed
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The CCOM1 port is configured for NMEA2000 messages only
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4.2 Configuring the CAN Bus
To enable a SMART2 to communicate over the CAN bus, configure CAN and place the receiver on
bus, triggering a J1939 Address Claim Procedure.
1. Use the J1939CONFIG command to specify J1939 NAME and desired address.
This step is optional and only required if the default NAME parameters are to be changed.
2. Use the CANCONFIG command to place the receiver on bus.
3. Optionally, use the J1939STATUS log to monitor CAN status on the receiver.
4.2.1 Configuration Notes
The J1939CONFIG and CANCONFIG commands can be entered in any order. After the
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CANCONFIG command is used to place the receiver on the CAN bus, J1939CONFIG com-
mands take effect immediately. Until then, J1939CONFIG can be entered many times to
change the settings because they have not taken affect yet (the receiver is not yet on the
bus).
The J1939 Address claim procedure is executed if and only if both J1939CONFIG NODEx
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CANx and CANCONFIG CANx ON are entered.
Use J1939STATUS log to determine the receiver's CAN status and the actual address claimed
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by a particular node.
Once the receiver is "on bus", it must be taken "off-bus" using CANCONFIG for any further
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configuration changes using J1939CONFIG.
The receiver is fully "on-bus" only once the J1939 address has been successfully claimed.
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SMART2 Installation and Operation Manual 1
Table 8: Default NAME
Parameter
Address
Industry Group
Device Class
Device Class Instance
Function
Function Instance
ECU Instance
Manufacturer Code
Value
0x1C
2
0
0
23
0
0
305
37
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